From the middle of June 2003 to 10 October 2003, six cases of tularaemia were confirmed in the Norwegian central and eastern counties of Oppland and Hedmark. Four of these cases were IgG and IgM positive for antibodies against Francisella tularensis. In one case, the titre was over 8000. The fifth case was both culture and PCR positive for F. tularensis. The patients were all males - aged 15, 17, 34, 36, 59 and 74 years respectively. (Introduction)